Stock material or miscellaneous articles – Layer or component removable to expose adhesive – Dissimilar adhesives
Patent
1995-02-27
1997-04-22
Davis, Jenna
Stock material or miscellaneous articles
Layer or component removable to expose adhesive
Dissimilar adhesives
428 421, 428 423, 428354, 428906, C09J 702
Patent
active
056227612
ABSTRACT:
A unique "double-sided" sheet product is described which is surfaced on two sides with releaseable adhesive, but which allows for differential releaseability from the surfaces to which it is attached, and is constructed such that the user is able to control completely which of the surfaces is to be preferentially detached from the product. A sheet of flexible material with two principal sides has adhesives attached to those sides for releaseable adherence of the sheet to two separate objects, with the sides having a different degrees of releaseability. The difference in releaseability can be obtained by either or both chemical or physical means, including adhesive composition, density, areal extent and positioning. The sheets may be in elongated tape form or more squarish or rectangular note form. Either or both adhesives may be formed as single bodies or a plurality of bodies on their respective sides of the sheet. The adhesives are preferably disposed in geometrical shapes, such as circles, ovals, ellipses, rectangles or polygons. The adhesives may be placed such that adhesive areas on adjacent sheets interfit and the sheets can be padded or stacked and the pads or stacks may be covered. Tapes may be rolled. The products permit making ordinary documents "self-posting" and can also be configured to provide for predictable differential releaseability.
REFERENCES:
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patent: 4844973 (1989-07-01), Konishi
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Myers, Surfaces, Interfaces, and Colloids: Principles and Applications (1991), pp. 8-15 and 405-415.
Adamson, Physical Chemistry of Surfaces (5th ed., 1990), 483-487.
Temin, Samuel T., "Pressure-Sensitive Adhesives for Tapes and Labels," in Handbook of Adhesives, ch. 38, pp. 641-663, (1990).
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